VietnamGear.com

Vietnam War Dictionary

CISO

The Counterinsurgency Support Office was established on Okinawa in 1963 to supply clothing, weapons and equipment to Special Forces operating in Vietnam. Principally run by Ben Baker, the office issued standard and untraceable (sterile) gear as well as locally developed items such as the bolo knife, the indigenous rucksack, tiger stripe fatigues and Viet Cong style black pajamas.

See: CIDG, SOG